import org.omg.PortableInterceptor.INACTIVE;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.net.Socket;
import java.util.Scanner;

/**
 * @author 徐志荣
 * @date 2023/4/7 10:54
 */
public class TcpEchoClient {
    private Socket socket =null;

    public TcpEchoClient(String serverIp,int port) throws IOException {
        //这个操作相当于让客户端和服务器建立tcp连接
        //这个连接连上了,服务器的accept就会返回
        //accept是会阻塞的,(没有客户端连接)
        socket = new Socket(serverIp,port);

    }
    public void start(){
        Scanner scanner = new Scanner(System.in);
        try(InputStream inputStream = socket.getInputStream();
            OutputStream outputStream = socket.getOutputStream()){
            PrintWriter printWriter = new PrintWriter(outputStream);
            Scanner scannerForSocket = new Scanner(inputStream);
        while(true){
            //1. 从键盘上读取用户输入的内容
            System.out.println("->");
            String request = scanner.next();
            //2.把读取的内容构造成请求,发送给服务器
            //这里的输入是有换行的~
            printWriter.println(request);
            printWriter.flush();
            //3.从服务器读取响应内容
            String response = scannerForSocket.next();
            //4.把响应结果显示到控制台上
            System.out.printf("req: %s;resp:%s\n",request,response);
        }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    public static void main(String[] args) throws IOException {
        TcpEchoClient client = new TcpEchoClient("127.0.0.1",9090);
        client.start();
    }
}
